EARNINGS PER SHARE

6 Months Ended

Jun. 30, 2023

Earnings Per Share [Abstract]

EARNINGS (LOSS) PER SHARE

EARNINGS PER SHARE

    The computation of basic and diluted earnings per common share was as follows (in millions, except per share data):

	Three Months Ended June 30,				Six Months Ended June 30,
	2023		2022		2023		2022
Amounts attributable to Quest Diagnostics’ common stockholders:
Net income attributable to Quest Diagnostics	$	235	$	234	$	437	$	589
Less: Earnings allocated to participating securities	1		1		2		2
Earnings available to Quest Diagnostics’ common stockholders – basic and diluted	$	234	$	233	$	435	$	587
Weighted average common shares outstanding – basic	112		117		112		118
Effect of dilutive securities:
Stock options and performance share units	2		2		2		2
Weighted average common shares outstanding – diluted	114		119		114		120
Earnings per share attributable to Quest Diagnostics’ common stockholders:
Basic	$	2.08	$	2.00	$	3.88	$	4.97
Diluted	$	2.05	$	1.96	$	3.83	$	4.88

    The following securities were not included in the calculation of diluted earnings per share due to their antidilutive effect:

	Three Months Ended June 30,		Six Months Ended June 30,
	2023	2022	2023	2022
Stock options and performance share units	—	1	—	—